NFPA 20: More key factors to consider

Other issues you should be aware of with the additions to the 2013 edition of NFPA 20.

06/25/2013


Figure 6: Incorrect elbow orientation in a pump suction is shown. Courtesy: Aon Fire Protection EngineeringDouble-wall fuel tanks: Language to clarify that a dike is not required for double-wall diesel oil fuel tanks for fire pumps was added to the 2013 edition of NFPA 20. It should be noted that NFPA 20 does not refer to NFPA 30: Flammable and Combustible Liquids Code, and therefore the requirement in NFPA 30 that requires all pipe into a double-wall fuel tank to be through the top of the tank does not apply to NFPA 20. NFPA 20 requires the diesel fuel line near the bottom of the tank to provide gravity feed to the diesel engine.

Elbows, tees in pump suction piping: While the requirement that the distance between the flanges of the pump suction intake and an elbow or tee must be greater than 10 times the suction pipe for elbows and tees that have a centerline plane parallel to a horizontal split-case pump shaft was not changed, the figures in the appendix demonstrating proper installation were clarified. See Figure 6 for an example of an elbow incorrectly installed with a centerline plane parallel to the horizontal split-case pump shaft.

Equipment access: Fire pump rooms that are not directly accessible from the outside must be accessible through an enclosed passageway from an enclosed stairway or exterior exit having a fire-resistance rating not less than the fire-resistance rating of the fire pump room.

Reliability measurement: The ongoing debate over what makes a “reliable” electrical source for fire pumps was not resolved and will continue to be studied for the next cycle. 


Gayle Pennel is a project manager with Aon Fire Protection Engineering. His expertise lies in fire protection systems and water supplies. He is currently chairman of the NFPA 20 committee and serves on the NFPA 25 committee. He has designed fire protection systems for super high-rise and large exhibition centers, as well as industrial sites. Pennel has consulted on pressure surge, corrosion, and other fire protection failure issues and has successfully presented fire protection design alternatives to state and local authorities.



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
World-class maintenance: The three keys to success - Deploy people, process and technology; 2016 Lubrication Guide; Why hydraulic systems get hot
Your leaks start here: Take a disciplined approach with your hydraulic system; U.S. presence at Hannover Messe a rousing success
Hannover Messe 2016: Taking hold of the future - Partner Country status spotlights U.S. manufacturing; Honoring manufacturing excellence: The 2015 Product of the Year Winners
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
Getting to the bottom of subsea repairs: Older pipelines need more attention, and operators need a repair strategy; OTC preview; Offshore production difficult - and crucial
Digital oilfields: Integrated HMI/SCADA systems enable smarter data acquisition; Real-world impact of simulation; Electric actuator technology prospers in production fields
Improving flowmeter calibration; Selecting flowmeters for natural gas; Case study: Streamlining assembly systems using PC-based control; CLPM: Improving process efficiency, throughput
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
Warehouse winter comfort: The HTHV solution; Cooling with natural gas; Plastics industry booming

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role that compressed air plays in manufacturing plants.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me